ESP8266/OTA

Exploring Over The Air (OTA) updates.

There is an OTA option in the Arduino IDE, however there doesn't seem to be much on how to use it.

It's also important to know the flash memory size, ESP.getFlashChipSize() may be useful.

void setup() {
  // put your setup code here, to run once:

  Serial.begin(115200);
  Serial.println("Flash Memory Stuff");

  Serial.println("ESP ID: ");
  Serial.println(ESP.getChipId());
 
  Serial.println("Flash ID: ");
  Serial.println(ESP.getFlashChipId());
  Serial.println("Flash Size: ");
  Serial.println(ESP.getFlashChipSize());
  Serial.println("Flash Speed: ");
  Serial.println(ESP.getFlashChipSpeed());
}

Serial output from an ESP-01

Flash Memory Stuff
ESP ID: 
14478709
Flash ID: 
1327328
Flash Size: 
524288
Flash Speed: 
40000000

• https://harizanov.com/2015/06/firmware-over-the-air-fota-for-esp8266-soc/